cubicweb #4962681 migration failures from cw 3.12 [validation pending]

it seems that a bit of reordering could do the trick

prioritynormal
typebug
done in3.19.11
load1.000
load left0.000
closed by#1ae64186af94 [migration] reorder system tables / meta-schema migration into bootstrap_migration
patch[migration] reorder system tables / meta-schema migration into bootstrap_migration [applied]